Ioniq 6 (1st)
Reliability Score
Complaints by Engine Code
Hyundai Ioniq 6 Unidentified Engine
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Complaint Breakdown
Battery & Propulsion Reliability
Battery Electric (BEV)
Battery & propulsion complaint analysis for the 2023-2025 Hyundai Ioniq 6
That's about 2.4x the typical rate for BEVs in this dataset (median 5.7 per year). Above peer average — but high-volume models naturally produce more raw complaints, so check the issue mix below before drawing conclusions.
What kind of battery complaint?
Among the 40 battery-related complaints, here's the type mix. These percentages describe what the complaints are about — not how reliable the vehicle is overall.
Low-voltage battery deaths, common on EVs and hybrids that use a 12V for accessories.
Loss of power, drive unit, inverter, traction motor, DC-DC converter.
Charge port, cable, mobile connector, or session failures.
Propulsion battery defects, capacity loss, BMS faults, replacement claims.
Regen brake feel, one-pedal driving, B-mode complaints.
Battery & propulsion recalls (3)
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2024 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-Volt battery, which can result in a loss of drive power.
Consequence: A loss of drive power increases the risk of a crash.
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2025 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt battery, which can result in a loss of drive power.
Consequence: A loss of drive power increases the risk of a crash.
Hyundai Motor America (Hyundai) is recalling certain 2023-2025 IONIQ 6 electric vehicles. The charging port door panel may detach.
Consequence: A detached charging port door panel can create a road hazard for other vehicles, increasing the risk of a crash.
Sample complaint excerpts
12V Auxiliary Battery
- [2023] The shift-by-wire system failed while the vehicle was being parked. The vehicle would not shift out of Drive; repeated attempts to engage Park resulted in Neutral only, with a "PARK malfunction. Engage parking brake when parking vehicle." warning displayed in the instrument cluster. Because this vehicle requires Park to be engaged before it can be powered off, the vehicle also could not be turned
- [2023] In November of 2025 the vehicle displayed a "Check Eletrical System" error message. Shortly thereafter the vehicle decelerated to under 10mph as we were turning into traffic. We were able to drive it home (less than 1mi away) and then called the Dealership. The car was then towed to the dealer (but needed a jump as the 12v battery had drained). The dealer diagnosed a failure of the ICCU and repla
- [2023] I leased a 2023 Ioniq 6 electric car on September 2023. Since leasing the vehicle, the vehicle has been towed four times for the same problem, the parking brake malfunctions rendering the vehicle unusable. I have multiple photos and videos documenting this. This has happened either after parking the vehicle and attempting to turn it off, or after turning on the car after being parked. The first t
Electric Propulsion
- [2023] While driving on the highway, there was a complete loss of power and steering. I was able to navigate to the side of the road. The vehicle would not start on multiple occasions, and no warning lights illuminated. The vehicle was taken to the dealer, where it was stated that the issue could not be duplicated. The vehicle was not repaired. The manufacturer was not notified of the issue. The approxim
- [2023] On March 19, 2026 my Hyundai Ioniq 6 broke. It was clearly the ICCU problem. The car went into turtle mode with a maximum speed of 22 miles an hour and told me to get to a safe area , stop the car and have it brought in. It was brought to my local Hyundai dealer and a few days later they confirmed it was the ICCU problem. This is a safety issue. Fortunately I was 1 mile from my house and did not g
- [2023] A failure of the ICCU resulted in a maximum speed of about 25 mph and eventually a total loss of power.
Charging System
- [2023] My 2023 Ioniq 6 is not charging as it has for 3 years. When charging to 100% my app States 347 and 382 miles. It should be 361 as stated by Hyundai. What happens if I drive under 45 mph after 5 miles the miles goes down to 303. It is not working as stated. It is not holding miles properly.
- [2023] The fuel door/charge door would not open. Conditions were such that I was safe and had sufficient range without charging, but were I farther from home this could have left me stranded. The problem has not been confirmed by a dealer, other service center, manufacturer, police, or insurance representative, though a friend was not able to open it either/confirmed the issue was not "user error". There
- [2023] The contact owns a 2023 Hyundai Ioniq 6. The contact received notification of NHTSA Campaign Number: 24V868000 (Electrical System), and the vehicle was taken to the dealer, where a software update was performed. The contact stated that the vehicle was charged at the residence, and the contact received notification through the Mobile App that the big battery charge was 80 percent. The contact state
High-Voltage Battery
- [2023] The shift-by-wire system failed while the vehicle was being parked. The vehicle would not shift out of Drive; repeated attempts to engage Park resulted in Neutral only, with a "PARK malfunction. Engage parking brake when parking vehicle." warning displayed in the instrument cluster. Because this vehicle requires Park to be engaged before it can be powered off, the vehicle also could not be turned
- [2023] ICCU failure. EV car flashed battery issues and could not drive. ICCU and 12 volt battery replaced after 10 days in dealership shop. Manufacturer inspected. Prior to issue electric hatchback closed half way then stalled. I drove to the dealership and asked them to check if there was something wrong. They closed the hatch manually and said the 12 volt battery was fine and the computer said somethin
- [2023] Shortly after the ICCU recall was repaired I received numerous electrical system warnings on my Hyundai Ioniq 6 (2023, SE model). The dealership identified the problem to be the Battery Management System needed a complete replacement would you take 1-2 weeks. When you factor in three different ICCU service appointments (two SW updates and full replacement) the BMS issue was the fourth electrical
Regenerative Braking
- [2023] While driving in the highway I took my foot off the accelerator and despite one pedal driving being on the car did not brake. I then tapped the brake. When I then pushed the accelerator to keep up with traffic, nothing happened. I checked the screen for warning lights. The car had none. The accelerator pedal was non responsive causing a huge safety issue for me and others on the road as the car wa
- [2024] The power system failure warning came on as I was driving up on an intersection. WhenI released the accelerator because I was in i-pedal mode (one pedal driving), the cars braking system did not activate. Consequently, I ran the red light. The car power was reduced, and I was able to pull into the parking lot of a strip mall as a police vehicle pulled behind me. After explaining our situation and
Source: classified from NHTSA complaint and recall data. "Battery-related" includes high-voltage propulsion battery, charging system, hybrid drivetrain, electric propulsion, regenerative braking, 12V auxiliary battery, and thermal-event complaints. Other complaints (suspension, steering, brakes, infotainment) appear in the engine and vehicle-level sections. Rates are absolute counts, not normalized per-VIN — high-volume models naturally produce more raw complaints than low-volume ones. Self-reported death and injury counts are capped per complaint to limit form abuse.
Battery: Hyundai e-GMP 77.4 kWh (NCM)
Pack overview
Known issues
How this pack ages (industry context)
Industry fleet aggregates: 2.3% average annual capacity loss across 22,700 EVs / 21 models (Geotab, 2026), and 95% range retention at 5 years on average across 30,000+ vehicles (Recurrent, 2026).
OEM warranty floor on this pack: 10 yr / 100k mi to 70% capacity.
Public per-pack degradation curves are not available for most models. Individual results vary materially with climate, charging behavior, and DC fast-charge frequency.
Owner Complaints by System
Complaints owners filed with NHTSA about the Hyundai Ioniq 6, counted across every engine. A complaint can name more than one system.
What to check on a used 2023-2025 Hyundai Ioniq 6
On a used 2023-2025 Hyundai Ioniq 6, the systems with the most NHTSA owner complaints are the electrical system (75), the drivetrain (18) and the 12-volt battery and its charging (18). Each one has an inspection step below, with counts as of 2026-10-12. A complaint is an owner report, not a confirmed defect, and counts rise with sales.
- Switch on every electrical item in turn: lights, windows, locks, wipers, climate fan, screen and power outlets.Costly repair. NHTSA has 75 owner complaints on the 2023-2025 Hyundai Ioniq 6 about the electrical system.
- Shift between Drive, Reverse and Park several times, then make slow, tight turns in both directions.Costly repair. NHTSA has 18 owner complaints on the 2023-2025 Hyundai Ioniq 6 about the drivetrain, which NHTSA files under its power train category.
- Measure the 12-volt battery before the car is switched on.Costly repair. NHTSA has 18 owner complaints on the 2023-2025 Hyundai Ioniq 6 about the 12-volt battery and its charging.
- Accelerate hard once from a stop and once from 40 mph, and hold a steady highway speed.Safety. NHTSA has 16 owner complaints on the 2023-2025 Hyundai Ioniq 6 about the electric drive system.
- Switch the ignition on and watch the airbag light. On the drive, check the backup camera and any collision or lane warning.Safety. NHTSA has 11 owner complaints on the 2023-2025 Hyundai Ioniq 6 about the airbags and driver-assist systems.
Recalls (6)
Hyundai Motor America (Hyundai) is recalling certain 2023-2025 Hyundai Ioniq 6, 2023-2026 Genesis G90, 2024-2026 Hyundai Santa Fe, and Hyundai Santa Fe Hybrid vehicles. The driver and passenger seat belt anchors may detach.
Hyundai Motor America (Hyundai) is recalling certain 2023-2025 IONIQ 6 electric vehicles. The charging port door panel may detach.
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2025 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt battery, which can result in a loss of drive power.
Hyundai Motor America (Hyundai) is recalling certain 2024 IONIQ 6 vehicles. The differential gear bolts in the gear drive unit may not be tightened properly, which can result in a loss of drive power or cause the differential to lock up.
Hyundai Motor America (Hyundai) is recalling certain 2022-2024 IONIQ 5, 2023-2024 IONIQ 6, Genesis GV60, Genesis GV70 "Electrified," and Genesis G80 "Electrified" vehicles. The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-Volt battery, which can result in a loss of drive power.
Show 1 older recall
Hyundai Motor America (Hyundai) is recalling certain 2023 IONIQ 5, IONIQ 6, and Genesis GV60 vehicles. The rear inner driveshaft may have been improperly heat-treated, allowing it to break under load and resulting in a loss of drive power.
NHTSA Safety Ratings About NHTSA ratings
Alternatives in Midsize Sedan
Frequently Asked Questions
What are the most common 2023-2025 Hyundai Ioniq 6 complaints?
Owners have filed 130 complaints with NHTSA about the 2023-2025 Hyundai Ioniq 6. The systems they name most often are the electrical system, the transmission and the fuel system.
Is the 2023-2025 Hyundai Ioniq 6 a good used car?
That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 130 complaints with NHTSA about the 2023-2025 Hyundai Ioniq 6. Check which systems they name most often and whether a recall is still open on that car.
How many NHTSA complaints does the 2023-2025 Hyundai Ioniq 6 have?
NHTSA has 130 owner complaints on file for the 2023-2025 Hyundai Ioniq 6 as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.
What recalls affect the 2023-2025 Hyundai Ioniq 6?
NHTSA lists 6 recalls covering some 2023-2025 Hyundai Ioniq 6 vehicles. Which ones apply depends on the VIN: enter it at nhtsa.gov/recalls to see the open campaigns on a specific car.
What should I check before buying a used Hyundai Ioniq 6?
Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the electrical system, the transmission and the fuel system, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.
What are the NHTSA crash test ratings for the Ioniq 6?
The 2025 Hyundai Ioniq 6 received an overall 5-star safety rating from NHTSA. Frontal crash: 4 stars. Side crash: 5 stars. Rollover: 5 stars (6.7% rollover probability). Electronic Stability Control: Standard. Forward Collision Warning: Standard & Optional. Lane Departure Warning: Standard. These ratings are based on standardized crash tests conducted by the National Highway Traffic Safety Administration.
Data from NHTSA federal complaints database. 130 complaints analyzed. Data confidence: high. Last updated: 2026-10-12.